Everyday clothes; casual wear worn on ordinary occasions as opposed to formal or work attire.
週末は普段着で買い物に行くことが多い。
I often go shopping in casual clothes on weekends.
普段着でも清潔感があると印象がいい。
Even in casual clothes, having a clean appearance gives a good impression.
学校は普段着で構わないと言われた。
We were told that regular clothes are fine for school.